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2008ApJ...687.1236H - Astrophys. J., 687, 1236-1252 (2008/November-2)

A universal decline law of classical novae. III. GQ Muscae 1983.

HACHISU I., KATO M. and CASSATELLA A.

Abstract (from CDS):

We present a unified model of infrared (IR), optical, ultraviolet (UV), and X-ray light curves for the 1983 outburst of GQ Muscae (Nova Muscae 1983) and estimate its white dwarf (WD) mass. Based on an optically thick wind model of nova outbursts, we model the optical and IR light curves with free-free emission, and the UV 1455 Å and supersoft X-ray light curves with blackbody emission. The best-fit model that simultaneously reproduces the IR, optical, UV 1455 Å, and supersoft X-ray observations is a 0.7±0.05 M☉ WD with an assumed chemical composition of the envelope of X=0.35-0.55, XCNO=0.2-0.35, and Z=0.02 by mass weight. The mass lost by the wind is estimated to be ΔMwind∼2x10–5 M☉. We provide a new determination of the reddening, E(B-V)=0.55±0.05, and of the distance, ∼5 kpc. Finally, we discuss the strong UV flash that took place on JD 2,445,499 (151 days after the outburst).

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Journal keyword(s): Stars: Novae, Cataclysmic Variables - Stars: Individual: Constellation Name: GQ Muscae - Stars: Mass Loss - Ultraviolet: Stars - Stars: White Dwarfs - X-Rays: Binaries

Simbad objects: 4

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